/*
 *  Copyright 2008-2013 NVIDIA Corporation
 *  Copyright 2013 Filipe RNC Maia
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

#include <cusp/detail/thrust/complex.h>

namespace thrust
{
template<typename ValueType,class charT, class traits>
std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& os, const complex<ValueType>& z)
{
    os << '(' << z.real() << ',' << z.imag() << ')';
    return os;
}

template<typename ValueType, typename charT, class traits>
std::basic_istream<charT, traits>&
operator>>(std::basic_istream<charT, traits>& is, complex<ValueType>& z)
{
    ValueType re, im;

    charT ch;
    is >> ch;

    if(ch == '(')
    {
        is >> re >> ch;
        if (ch == ',')
        {
            is >> im >> ch;
            if (ch == ')')
            {
                z = complex<ValueType>(re, im);
            }
            else
            {
                is.setstate(std::ios_base::failbit);
            }
        }
        else if (ch == ')')
        {
            z = re;
        }
        else
        {
            is.setstate(std::ios_base::failbit);
        }
    }
    else
    {
        is.putback(ch);
        is >> re;
        z = re;
    }
    return is;
}

} // namespace thrust
